Thanks for your help 
EDIT : Well I’m not sure anymore… I just installed a windows VM on my current computer and it works perfectly I can ssh (with linux subsystem) perfectly and access my python server.
So it seems to be coming from my kali VMs…
SOLUTION :
I found a solution doing this : sudo ifconfig tun0 mtu 1200 it solved the SSH problem and the curl problem. I cannot explain why it solves it though…